Logarithm and power (exponentiation) computations using modern computer architectures

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United States of America Patent

PATENT NO 10303439
APP PUB NO 20170308357A1
SERIAL NO

15138846

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Embodiments of the present invention may provide the capability to evaluate logarithm and power (exponentiation) functions using either hardware specific instructions, or a hardware specific implementation with reduced memory requirements. An input comprising a floating point representation of a real number may be received and a mantissa and an exponent may be extracted. A function of a logarithm of a mantissa of the real number may be approximated by utilizing a polynomial based on the mantissa. The approximated function of the logarithm may be combined with the exponent for calculating a value comprising a logarithm of the real number. Likewise, an input comprising a floating point representation of a real number and a representation of a second number may be received and an approximation of the real number to the power of the second number may be generated.

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Patent Owner(s)

  • IBM CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bekas, Konstantinos Horgen, CH 38 225
Curioni, Alessandro Gattikon, CH 33 326
Ineichen, Yves G Zurich, CH 3 27
Malossi, Cristiano Adliswil, CH 1 1

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